نتایج جستجو برای: mining faces

تعداد نتایج: 127201  

Journal: :The Journal of the Royal College of General Practitioners 1969
J D Knox

Journal: :Transit 2013

Journal: :Nature Reviews Neuroscience 2009

Cameroon has a strong geological potential for a number of mineral resources that, if well managed, could support economic growth. The country contains potentially large deposits of iron ore, gold, bauxite, diamond, limestone, nickel, and gemstones, and indices of other numerous minerals and precious metals. Despite its geological wealth, mining has never played a major role in Cameroon’s econo...

Journal: :Frontiers in Materials 2023

In this paper, the authors address issue of large solid waste output and surface subsidence in western coal base. They focus on 110904 filling working face Renjiazhuang Mine employ a combination theoretical analysis, numerical simulation, field practice to analyze limit caving step cycle pressure face. The propose mining-filling coordination scheme called “three mining one charging”. Through th...

Journal: :The Gerontologist 2018

Journal: :The Iowa Review 1983

Journal: :Proceedings of the Royal Society of Medicine 1972

Journal: :Perception 2003

Journal: :Journal of Surgery 2017

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